Cita APA (7a ed.)

THOMAS T. (1993). TO CHALLENGE AND TO CHANGE. PENGUIN BOOKS INDIA (P) LTD.

Cita Chicago Style (17a ed.)

THOMAS T. TO CHALLENGE AND TO CHANGE. NEW DELHI: PENGUIN BOOKS INDIA (P) LTD, 1993.

Cita MLA (9a ed.)

THOMAS T. TO CHALLENGE AND TO CHANGE. PENGUIN BOOKS INDIA (P) LTD, 1993.